Method of preparing molybdenum carbide nano material based on waste polyvinyl chloride

A nanomaterial, polyvinyl chloride technology, applied in the direction of carbide, tungsten/molybdenum carbide, etc., can solve problems such as environmental pollution, and achieve the effects of wide source of raw materials, cheap source of raw materials, and simple operation

Inactive Publication Date: 2019-02-22
JIANGSU UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention mainly provides a method for preparing molybdenum carbide nanomaterials based on waste polyvinyl chloride, which uses waste polyvinyl chloride as a carbon source, has a wide range of raw material sources and is cheap, and realizes the conversion of waste polyvinyl chloride to molybdenum carbide nanomaterials by one-step chemical reaction Transformation, solve the environmental pollution problem caused by waste polyvinyl chloride

Method used

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  • Method of preparing molybdenum carbide nano material based on waste polyvinyl chloride
  • Method of preparing molybdenum carbide nano material based on waste polyvinyl chloride
  • Method of preparing molybdenum carbide nano material based on waste polyvinyl chloride

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Add 2mmol of molybdenum disulfide, 1.6mmol of waste polyvinyl chloride and 50mmol of sodium metal into a 20ml stainless steel autoclave, seal it and put it into an electric furnace capable of temperature programming, and the furnace temperature rises from room temperature to 600 within 60 minutes °C, and then cooled to room temperature naturally after maintaining at 600 °C for 10 hours. The final product in the autoclave consisted of black deposits and residual gas. Collect the black deposits sticking to the inner surface of the kettle wall, wash with distilled water, dilute hydrochloric acid and absolute ethanol several times, and filter the obtained samples. The samples are dried in a vacuum drying oven at 50°C for 4 hours, and finally collected. used for characterization.

[0031] The phase analysis of the powder was carried out by a Japanese Rigaku D / max-γA X-ray powder diffraction (XRD) instrument, Graphite monochromator, the tube voltage and current are 40kV an...

Embodiment 2

[0033] Add 2mmol of molybdenum disulfide, 1.6mmol of waste polyvinyl chloride and 50mmol of sodium metal into a 20ml stainless steel autoclave, seal it and put it into an electric furnace capable of temperature programming, and the furnace temperature rises from room temperature to 700 within 70 minutes °C, then maintained at 700 °C for 5 hours and cooled to room temperature naturally. The final product in the autoclave consisted of black deposits and residual gas. Collect the black deposits sticking to the inner surface of the kettle wall, wash with distilled water, dilute hydrochloric acid and absolute ethanol several times, and filter the obtained samples. The samples are dried in a vacuum drying oven at 50°C for 4 hours, and finally collected. used for characterization.

[0034] Figure 5 It is the X-ray diffraction spectrogram of the product prepared in Example 2. Depend on Figure 5 It can be seen that all the diffraction peaks in the X-ray diffraction spectrum (2θ a...

Embodiment 3

[0036] Add 2mmol of molybdenum disulfide, 1.6mmol of waste polyvinyl chloride and 20mmol of sodium metal into a 20ml stainless steel autoclave, seal it and put it into an electric furnace capable of temperature programming, and the furnace temperature rises from room temperature to 550 within 55 minutes. °C, and then cooled to room temperature naturally after maintaining at 550 °C for 40 hours. The final product in the autoclave consisted of black deposits and residual gas. Collect the black deposits sticking to the inner surface of the kettle wall, wash with distilled water, dilute hydrochloric acid and absolute ethanol several times, and filter the obtained samples. The samples are dried in a vacuum drying oven at 50°C for 4 hours, and finally collected. used for characterization.

[0037] Figure 7 For the X-ray diffraction spectrum of the product prepared in Example 3, all the diffraction peaks in the figure can be identified as orthorhombic molybdenum carbide, where the...

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Abstract

The invention relates to the technical field of molybdenum carbide nano materials, in particular to a method of preparing a molybdenum carbide nano material based on waste polyvinyl chloride. The method comprises the following steps: (1) putting a molybdenum-containing compound, waste polyvinyl chloride, metal sodium and / or magnesium in a reactor in a molar ratio of 1: 0.25-2.5: 5-100; (2) heatingthe reactor in an electric furnace, and cooling at the end of the reaction; and (3) collecting, washing and drying the product in the reactor to obtain the molybdenum carbide nano material. By takingthe waste polyvinyl chloride as a carbon source, the raw materials are wide in source and cheap. The waste polyvinyl chloride is converted into the molybdenum carbide nano material by means of one-step chemical reaction, so that the problem of environmental pollution caused by the waste polyvinyl chloride is solved.

Description

technical field [0001] The invention belongs to the technical field of molybdenum carbide nanomaterials, in particular to a method for preparing molybdenum carbide nanomaterials based on waste polyvinyl chloride. Background technique [0002] As a high-temperature material, molybdenum carbide has excellent physical and chemical properties, such as high hardness, high melting point, good chemical stability and thermal stability. [0003] At present, the methods for preparing molybdenum carbide mainly use molybdenum trioxide and carbon reaction reduction synthesis method (J.Alloys.Compd., 1997,261,105-113.), thermal decomposition of molybdenum hexacarbonyl (Chem.Eur.J.,2004 , 10, 433-439.) and vapor deposition method (Adv. Mater., 2017, 29, 1700072.). The industrial preparation of molybdenum carbide is mainly by carbothermal reduction of molybdenum trioxide. However, the preparation of molybdenum carbide materials by carbon reduction of molybdenum trioxide requires a higher r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/949
CPCC01P2002/01C01P2002/72C01P2004/03C01B32/949
Inventor 王良彪陆铃鲸戴伟城韩莹霞王佳健张开龙马璇秦恒飞
Owner JIANGSU UNIV OF TECH
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